Just basic noise, with a little more complexity, ill upload a screenshot:
This is the materials tab in blender.
The "Displacement" section is where the bump map is. Note that i'm rendering in cycles, so if your using the internal renderer, this will seem unfamiliar. (cycles is a diferent built in renderer in blender)
http://imgur.com/YAsum

Here is an updated version:
http://imgur.com/IPqNf
I still have some questions though, This is rendered at 4500 passes, and still has graininess and random bright pixels, do i have to go even higher? Also, did I do what you said effectively, or is this not what you meant?